CN104061532A - Scheme for lowering color tolerance of LED light sources - Google Patents
Scheme for lowering color tolerance of LED light sources Download PDFInfo
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- CN104061532A CN104061532A CN201410346716.7A CN201410346716A CN104061532A CN 104061532 A CN104061532 A CN 104061532A CN 201410346716 A CN201410346716 A CN 201410346716A CN 104061532 A CN104061532 A CN 104061532A
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Abstract
The invention discloses a scheme for lowering the color tolerance of LED light sources. According to the scheme for lowering the color tolerance of the LED light sources, the LED light sources are arranged in an LED lamp, and the color tolerance of the LED light sources is lowered by conducting color mixing on the LED light sources, so that the light quality of the LED light sources is improved. The color mixing method comprises the steps that when the color temperature is 6000 K, a color zone with the color tolerance within the range of 3SDCM is selected from a color zone, with the color temperature being 6000 K, of a MacAdam color zone graph so that a standard parallelogram can be formed, a first parallelogram and a second parallelogram which are the same as the standard parallelogram in shape and size are longitudinally derived from the upper end and the lower end of the standard parallelogram respectively, it can be concluded through calculation that the color tolerance of the first parallelogram and the color tolerance of the second parallelogram respectively range from 3SDCM to 10SDCM, color mixing is conducted on the first LED light source with the color tolerance in the first parallelogram and the second LED light source with the color tolerance in the second parallelogram in the proportion of 1:1, the color tolerance of lamplight obtained after color mixing is in the standard parallelogram, standard light with the color tolerance smaller than 3SDCM is achieved, and the light effect achieved after color mixing is good.
Description
Technical field
The present invention relates to LED lighting field, particularly a kind of poor scheme of LED color tolerance that reduces.
Background technology
Color tolerance is poor is to characterize the X that photochromic electricity detecting system software calculates, difference between Y value and standard sources.Numerical value is less, and the degree of accuracy is higher.The spectrum of standard sources changes with colour temperature, during different-colour, and its standard spectrum different (general checkout equipment can be identified the reference color temperature of tested LED light source by automatic AUTO, and determines corresponding standard sources colour temperature value), the poor difference of color tolerance.When identical colour temperature, normative reference spectrum is consistent, chromaticity coordinates X, and Y is different, the poor difference of color tolerance.The poor unit of color tolerance: SDCM.In GB-T17262-2002 one end fluorescent lamp performance requirement standard, stipulate the poor 5SDCM of being less than of color tolerance that general electricity-saving lamp requires.The poor 7SDCM that is less than of color tolerance that GB24823-2009 general lighting requires with regulation LED module in the performance requirement standard of LED module.Poor 7 SDCM that are not more than of regulation color tolerance in the standard of Energy Star ANSI C78.376.Poor 7 SDCM that are not more than of regulation color tolerance in the standard of European Union's standard IEC 60081.Color tolerance is poor is the important indicator of the light quality of judgement LED light source and even LED light fixture, the poor large words of color tolerance, easily affect finished product light source or light fixture is conforming photochromic, cause the partially blue partially green problem having having in a collection of lamp, photochromic uneven, light poor quality, visible, reduce the poor important measures that improve beyond doubt LED light source and even LED light fixture light quality of color tolerance, but it is poor not have at present the color tolerance that method effective and that feasibility is high reduces LED light source.Existing part producer, in order to control light quality, carries out strict checking on to the buying of LED light source material, must choose the material that photochromic uniformity is high, selects the particular B IN supply of material, and like this, the scope of buying is very narrow and small, and the Material Cost of LED light source is higher.
Therefore, how realizing a kind of feasibility poor scheme of color tolerance high, can effective reduction LED light source is technical problem urgently to be resolved hurrily in the industry.
Summary of the invention
Main purpose of the present invention is to provide the poor scheme of a kind of LED of reduction color tolerance, is intended to realize that a kind of feasibility is high, the poor scheme of color tolerance that can effective reduction LED light source.
The present invention proposes the poor scheme of a kind of LED of reduction color tolerance, in LED light fixture, be provided with LED light source, it is characterized in that, LED light source is carried out to colour mixture, and thereby to reduce color tolerance poor and then improve the light quality of LED light source, getting colour temperature is the LED light source work example of 6000K, color mixing method is as follows: when colour temperature is 6000K, from the 6000K Se district of MacAdam look district figure, choose color tolerance poor at 3 SDCM scope Nei Se districts formation standard parallelogram, 4 angle points of standard parallelogram are A1(0.3116, 0.332), A2(0.3164, 0.3307), A3(0.313, 0.3244), A4(0.3082, 0.3257), the slope of standard parallelogram is consistent with the slope of MacAdam's ellipse, from standard parallelogram upper end, lower end longitudinally derives respectively and equal identical the first parallelogram of the shape size of standard parallelogram, the second parallelogram, the first parallelogram is adjacent to standard parallelogram upper end, the second parallelogram is adjacent to standard parallelogram lower end, 4 angle points of the first parallelogram are B1(0.315, 0.3383), B2(0.3198, 0.337), A2(0.3164, 0.3307), A1(0.3116, 0.332), 4 angle points of the second parallelogram are A4(0.3082, 0.3257), A3(0.313, 0.3244), C3(0.3096, 0.3181), C4(0.3048, 0.3194), by the poor computing formula of color tolerance, can draw, the look range of tolerable variance of the first parallelogram and the second parallelogram is all between 3 SDCM ~ 10 SDCM, poor the first LED light source and poor the second LED light source that is positioned at the second parallelogram of color tolerance that is positioned at the first parallelogram of color tolerance carried out to the poor standard parallelogram that is positioned at of color tolerance that colour mixture makes the light after colour mixture in the ratio of 1:1, reach the poor standard light effect that is less than 3 SDCM of color tolerance, the color mixing method of the LED light source of other colour temperatures and said method are roughly the same.
Preferably, the brightness shelves of each BIN of the LED light source of colour mixture are consistent.
Preferably, the electric current of the LED light source by each colour mixture is identical.
Preferably, the LED light source series-fed of colour mixture.
Preferably, in each paths of LEDs light source of parallel operation, add equalizing control circuit.
The present invention proposes the poor scheme of a kind of LED of reduction color tolerance, in LED light fixture, be provided with LED light source, thereby the present invention improves the light quality of LED light source by LED light source being carried out to colour mixture.When the colour temperature of LED light source is 6000K, poor the first LED light source and poor the second LED light source that is positioned at the second parallelogram of color tolerance that is positioned at the first parallelogram of color tolerance carried out to the poor standard parallelogram that is positioned at of color tolerance that colour mixture makes the light after colour mixture in the ratio of 1:1, reach the poor standard light effect that is less than 3 SDCM of color tolerance.To LED light source carry out colour mixture can make finished product light source or light fixture consistent photochromic, thereby the partially blue partially green problem having of avoiding having in a collection of lamp, another object of colour mixture is can be all BIN(color block) LED light source can use.The advantage of colour mixture is apparent: 1, can make the photochromic uniformity of whole lamp high; 2, without selecting the BIN supply of material, ample supply and prompt delivery and in extensive range; 3, the LED light source of all BIN can adopt, and LED light source low price, effectively reduces production costs.Thereby the present invention has realized the method for high, can the effective reduction LED light source color tolerance poor raising LED of a kind of feasibility light fixture light quality.
Accompanying drawing explanation
Fig. 1 is an a kind of embodiment Se district figure who reduces the poor scheme of LED color tolerance of the present invention, X-axis, Y-axis are chromaticity coordinate axle, in figure, show standard parallelogram, the first parallelogram, the second parallelogram, the stain in figure is that existing LED encapsulation output distributes;
Fig. 2 is an a kind of embodiment Se district figure who reduces the poor scheme of LED color tolerance of the present invention, and X-axis, Y-axis are chromaticity coordinate axle, show standard parallelogram in figure, and the stain in figure distributes for the LED by after this programme colour mixture encapsulates output.
The realization of the object of the invention, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
The specific embodiment
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Referring to figs. 1 through Fig. 2, one embodiment of the poor scheme of a kind of LED of reduction color tolerance of the present invention is proposed, color tolerance is poor is the important indicator of the light quality of judgement LED light source and even LED light fixture, wherein, MacAdam's ellipse theory provides guidance method for describing the accuracy of colour vision and the good degree of differentiation Similar color of common human eye.Reduce the poor important measures that improve beyond doubt LED light source and even LED light fixture light quality of color tolerance, but it is poor not have at present the color tolerance that method effective and that feasibility is high reduces LED light source.Thereby the method that the present invention proposes the light quality that reduces the poor raising of color tolerance LED light fixture, be provided with LED light source, thereby the present invention improves the light quality of LED light source by LED light source being carried out to colour mixture in LED light fixture.
Getting colour temperature is the LED light source work example of 6000K, Fig. 1 has shown that colour temperature is 6000K Shi Se district figure, X-axis, Y-axis is chromaticity coordinate axle, color mixing method is as follows: when colour temperature is 6000K, from the 6000K Se district of MacAdam look district figure, choose color tolerance poor at 3 SDCM scope Nei Se districts formation standard parallelogram, 4 angle points of standard parallelogram are A1(0.3116, 0.332), A2(0.3164, 0.3307), A3(0.313, 0.3244), A4(0.3082, 0.3257), the slope of standard parallelogram is consistent with the slope of MacAdam's ellipse, from standard parallelogram upper end, lower end longitudinally derives respectively and equal identical the first parallelogram of the shape size of standard parallelogram, the second parallelogram, the first parallelogram is adjacent to standard parallelogram upper end, the second parallelogram is adjacent to standard parallelogram lower end, 4 angle points of the first parallelogram are B1(0.315, 0.3383), B2(0.3198, 0.337), A2(0.3164, 0.3307), A1(0.3116, 0.332), 4 angle points of the second parallelogram are A4(0.3082, 0.3257), A3(0.313, 0.3244), C3(0.3096, 0.3181), C4(0.3048, 0.3194), by the poor computing formula of color tolerance, can draw, the look range of tolerable variance of the first parallelogram and the second parallelogram is all between 3 SDCM ~ 10 SDCM, poor the first LED light source and poor the second LED light source that is positioned at the second parallelogram of color tolerance that is positioned at the first parallelogram of color tolerance carried out to the poor standard parallelogram that is positioned at of color tolerance that colour mixture makes the light after colour mixture in the ratio of 1:1, reach the poor standard light effect that is less than 3 SDCM of color tolerance.The color mixing method of the LED light source of other colour temperatures and said method are roughly the same.
In Fig. 1, shown standard parallelogram, the first parallelogram, the second parallelogram, the stain in figure is that existing LED encapsulation output distributes, visible, in standard parallelogram, the first parallelogram, the second parallelogram, is distributed with stain.Fig. 2 shown by the encapsulation output after this programme colour mixture and distributed, and visible, the LED after colour mixture is substantially in standard parallelogram, and color tolerance is poor in 3 SDCM, reaches standard light effect.
The basic skills that colour mixture is calculated is weighted average, and in order to simplify the complexity of calculating and reducing application, the prerequisite that colour mixture is calculated is as follows: 1, the brightness shelves of each BIN of the LED light source of colour mixture are consistent.If mixed with the LED light source of different brightness shelves, except colour temperature variable, during calculating, also to consider this variable of brightness so, this can increase the complexity of calculating and applying.2, the electric current of the LED light source by each colour mixture is identical.The reason of this prerequisite and prerequisite 1 is the same, and the electric current of different LED light source can cause brightness different, and this can increase the complexity of calculating and applying.Therefore, when concrete application, as far as possible all LED light source series-feds, each paths of LEDs light source of parallel operation will add equalizing control circuit.If the consideration for cost, when each paths of LEDs light source in parallel does not adopt equalizing control circuit, the BIN of LED light source of every road series connection and the LED light source number of each BIN want consistent, the series connection total voltage that can guarantee so every paths of LEDs light source approaches, thereby guarantees that the electric current uniformity of every paths of LEDs light source is high.
The main purpose that LED light source is carried out to colour mixture is to obtain finished product light source or light fixture is conforming photochromic, thereby the partially blue partially green problem having of avoiding having in a collection of lamp, another object of colour mixture is can be all BIN(color block) LED light source can use.The advantage of colour mixture is apparent: 1, can make the photochromic uniformity of whole lamp high; 2, without selecting the BIN supply of material, ample supply and prompt delivery and in extensive range; 3, the LED light source of all BIN can adopt, and LED light source low price, effectively reduces production costs.
In addition, thereby employing is carried out colour mixture to reduce the method for the poor raising of color tolerance light quality by corresponding LED light source, and the buying of LED light source material and management are comparatively complicated, need to improve buying and administrative mechanism, production and processing is comparatively complicated, needs to formulate and improve the concrete operation of production and processing.Thus, the points for attention of colour mixture application are as follows: 1, LED light source material need to be exclusively managed by a specially-assigned person, and the LED light source materiel warehouse-in that colour mixture is used and outbound all will have special quality personnel to manage, and quality personnel need to accept necessary colour mixture application training could be on duty.2, add man-hour requirement one BIN mono-charging tray, do the independent charging pan for LED light source that LED light source paster adds each minute BIN in man-hour, paster is that the different minute BIN of symmetrical paster is in the processing guidance providing according to developing department, to obtain uniform color blending effect, LED colour mixture paster processing staff need to accept necessary colour mixture application training could be on duty.3, early development design is thorough, and developer realizes the colour temperature target that uniformity is high except considering when doing colour mixture design early stage, also will consider the supply of material regularity of distribution of brightness shelves and the voltage gear of LED light source.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure transformation that utilizes description of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. one kind is reduced the poor scheme of LED color tolerance, in LED light fixture, be provided with LED light source, it is characterized in that, LED light source is carried out to colour mixture, and thereby to reduce color tolerance poor and then improve the light quality of LED light source, getting colour temperature is the LED light source work example of 6000K, color mixing method is as follows: when colour temperature is 6000K, from the 6000K Se district of MacAdam look district figure, choose color tolerance poor at 3 SDCM scope Nei Se districts formation standard parallelogram, 4 angle points of standard parallelogram are A1(0.3116, 0.332), A2(0.3164, 0.3307), A3(0.313, 0.3244), A4(0.3082, 0.3257), the slope of standard parallelogram is consistent with the slope of MacAdam's ellipse, from standard parallelogram upper end, lower end longitudinally derives respectively and equal identical the first parallelogram of the shape size of standard parallelogram, the second parallelogram, the first parallelogram is adjacent to standard parallelogram upper end, the second parallelogram is adjacent to standard parallelogram lower end, 4 angle points of the first parallelogram are B1(0.315, 0.3383), B2(0.3198, 0.337), A2(0.3164, 0.3307), A1(0.3116, 0.332), 4 angle points of the second parallelogram are A4(0.3082, 0.3257), A3(0.313, 0.3244), C3(0.3096, 0.3181), C4(0.3048, 0.3194), by the poor computing formula of color tolerance, can draw, the look range of tolerable variance of the first parallelogram and the second parallelogram is all between 3 SDCM ~ 10 SDCM, poor the first LED light source and poor the second LED light source that is positioned at the second parallelogram of color tolerance that is positioned at the first parallelogram of color tolerance carried out to the poor standard parallelogram that is positioned at of color tolerance that colour mixture makes the light after colour mixture in the ratio of 1:1, reach the poor standard light effect that is less than 3 SDCM of color tolerance, the color mixing method of the LED light source of other colour temperatures and said method are roughly the same.
2. a kind of poor scheme of LED color tolerance that reduces according to claim 1, is characterized in that, the brightness shelves of each BIN of the LED light source of colour mixture are consistent.
3. a kind of poor scheme of LED color tolerance that reduces according to claim 2, is characterized in that, the electric current of the LED light source by each colour mixture is identical.
4. a kind of poor scheme of LED color tolerance that reduces according to claim 3, is characterized in that, the LED light source series-fed of colour mixture.
5. a kind of poor scheme of LED color tolerance that reduces according to claim 3, is characterized in that, in each paths of LEDs light source of parallel operation, adds equalizing control circuit.
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| CN105738077A (en) * | 2015-11-30 | 2016-07-06 | 肇庆市立得电子有限公司 | Standard setting method and test method of color tolerance adjustment of an arbitrary light source |
| CN111667148A (en) * | 2020-05-13 | 2020-09-15 | 浙江云科智造科技有限公司 | Quality control method for LED production line |
| CN113308154A (en) * | 2021-05-31 | 2021-08-27 | 常州市友晟电子有限公司 | Diffuse reflection coating and application thereof in adjusting LED light |
| CN115081569A (en) * | 2022-07-20 | 2022-09-20 | 合肥龙旗智能科技有限公司 | Array LED patch management method, array LED control system and method |
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| CN115081569A (en) * | 2022-07-20 | 2022-09-20 | 合肥龙旗智能科技有限公司 | Array LED patch management method, array LED control system and method |
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Application publication date: 20140924 |